The same reason English speakers say, "tsk, tsk, tsk."
In Greek culture, the expression "po po po po" is often used as an exclamation of surprise, admiration, or dismay. It can convey a range of emotions, from awe at something beautiful to concern in a troubling situation. The phrase is somewhat similar to saying "wow" or "oh my" in English, reflecting the speaker's strong reaction to what they are experiencing.
it is here = zeh po (זה פה) or you can just say "po" (פה)
"Po lelei"; "Po manuia"; "Manuia le po".
Po.
Goodnight - "Manuia le po", "Po manuia" or "Po lelei".
Aloha po
Night - Po.
Pōpokiʻāhina [po-po-kee ah-ee-na] or Pōpoki 'oau [po-po-kee ow] might be easier. Both correct.
Opa!
Aloha; Say ipo [ee-po]
Aloha: Say pololi [po-lo-lee]
ahava po (אהבה פה)